Types of Tooth Gems and Materials Explained

“Tooth gem” is a catch-all term that covers everything from a two-dollar rhinestone to a real diamond in a gold setting. The material you choose affects the look, the price, how it catches the light, and to some degree how it wears over time. Here is a plain guide to the main options, plus the practical questions that matter more than the marketing.

Crystal and rhinestone gems

The most common and affordable gems are cut glass or acrylic rhinestones and cubic zirconia (CZ). CZ in particular is popular because it is clear, hard, and sparkles convincingly like a diamond at a fraction of the cost. These gems come in a wide range of sizes and colours, which makes them the usual starting point for a first gem or for anyone who wants to try the look without much financial commitment. They are flat-backed so they sit neatly against the tooth’s surface, and because they are inexpensive, replacing one if it comes off early is a minor cost rather than a real setback.

Swarovski crystals

Swarovski is a brand of precision-cut leaded glass crystal, prized for consistent faceting and bright, even sparkle. A Swarovski gem costs more than a generic rhinestone but noticeably less than a precious stone, which is why it sits as a favourite middle-ground choice for people who want a step up in sparkle without moving into precious-metal territory. The cut is what you are actually paying for — the facets throw light more crisply and consistently than cheaper glass, which is most noticeable in bright, direct light or on camera.

Solid gold charms

Instead of a faceted stone, some gems are small shapes cut or cast from real gold — hearts, stars, initials, tiny hoops, and similar motifs. Gold is biocompatible, does not tarnish in the mouth, and gives a warm, understated look quite different from a sparkling crystal. Because it is a precious metal, price scales with the karat and the size of the piece rather than with any faceting or brand. Gold charms tend to suit people who want something subtle and long-wearing in appearance rather than something that visibly sparkles from across a room.

Real diamonds and precious stones

At the top end are genuine diamonds and other precious gemstones, sometimes set in a small gold bezel rather than bonded loose. These are the most expensive option by a wide margin and are usually reserved for a deliberate statement piece rather than an experiment. A real diamond is extremely hard and brilliant, but the higher cost also means a bigger loss if it ever comes off unexpectedly, which is one reason aftercare and a secure, well-finished bond matter even more with a precious stone than with an inexpensive crystal.

Shapes, colours, and settings

Beyond the base material, gems vary in shape (round brilliant, teardrop, star, heart, and others), colour (clear is the classic choice, but pinks, blues, and aurora-borealis finishes are popular for a coloured look), and whether the stone sits loose-set or is held inside a small metal frame. A clear or silver-toned gem tends to read as subtle sparkle against whiter teeth, while a coloured or black stone stands out more sharply by contrast. Our gem shade matcher helps you picture how a given colour will actually play against your own tooth shade rather than guessing from a photo of someone else’s smile, and we cover the underlying logic in matching a tooth gem to your tooth shade.

Size matters as much as material

Whatever the material, size should be chosen to suit the tooth it is going on, not picked in isolation. Front-tooth gems typically run between about 1.8mm and 3mm across, and a size that looks bold on a narrow tooth can look lost or oversized on a broader one. Proportion, not just sparkle, is what makes a gem look like a deliberate choice rather than an accident. The gem size & tooth fit selector matches a diameter to your tooth width directly, and choosing a tooth gem size for your tooth walks through the actual numbers behind that recommendation, including why most realistic tooth widths land on the same smallest stocked size regardless of material.

How material affects the bonding, not just the look

Material choice has a smaller effect on bonding than people often assume, but it is not zero. A flat-backed crystal or CZ bonds predictably because its back surface is manufactured specifically for this kind of application. A gold charm, depending on its design, sometimes has a less uniform back surface, which means a skilled practitioner needs to check that it seats flush rather than rocking on a high point. A loose-set precious stone in a bezel adds a small metal rim that needs its own smooth, snag-free finish where it meets the resin. None of this changes the fundamental process, but it is one more reason the person applying the gem — not just the gem itself — determines how well any given material actually performs in your mouth.

Durability differences are smaller than you’d think

It is tempting to assume a harder material automatically lasts longer, but the resin bond, not the gem’s hardness, is usually what determines how long a gem stays in place. A diamond is harder than a crystal, but if both are bonded the same way, on the same tooth, with the same aftercare, they tend to come loose on a similar timeline — it is the adhesive giving way, not the stone wearing out. Where material durability does show up is in how a gem looks after months of wear: a lower-quality glass rhinestone can dull or scratch slightly over time in a way that CZ, Swarovski crystal, and precious stones generally resist better.

Metal settings and skin sensitivity

If a gem is set in metal rather than being a bare stone, the alloy matters a little more than people expect. Nickel, in particular, is a common cause of contact sensitivity in jewellery generally, and while a small tooth-gem setting sees far less moisture and friction than an earring or a ring, it is still worth mentioning a known metal sensitivity to whoever is applying the gem. Solid gold settings, especially higher-karat gold, are far less likely to trigger any reaction than a base-metal alloy plated to look like gold, which is one more reason “gold-coloured” and “solid gold” are not interchangeable claims worth taking at face value.

Does material change how you should clean it?

Day-to-day cleaning is nearly identical across materials — a soft brush, gentle strokes, and careful flossing protect a crystal, a Swarovski stone, a gold charm, or a diamond equally well, because in every case what actually needs protecting is the resin margin, not the gem’s surface. The one real difference is abrasive toothpaste: whitening and heavy-polish formulas can dull a glass or acrylic rhinestone’s surface shine over months of brushing in a way they will not visibly affect a diamond or CZ, both of which are far harder than the abrasive particles in toothpaste. If you have gone with an inexpensive crystal, a low-abrasion paste protects its looks a little longer, on top of protecting the bond either way.

A note on very cheap, unbranded stones

Price differences within the “crystal” category are not always about faceting quality alone. A very cheap, unbranded stone sold as part of a bargain kit is sometimes cut less precisely, seated in a less carefully shaped flat back, or simply lower-grade glass than what a reputable studio stocks. That does not make it unsafe by itself, but a poorly shaped back surface can make a clean, secure bond harder to achieve regardless of who is applying it. If a deal on gems looks unusually cheap compared to everything else on offer, it is a reasonable question to ask what exactly you are being sold, in the same way you might ask about any other small manufactured product.

Mixing materials across more than one gem

If you are planning gems on more than one tooth, there is no rule that says every gem has to match in material. A crystal on one tooth and a small gold charm on another can work together deliberately, especially if the two teeth read differently in the smile line to begin with — a bold crystal on a prominent lateral incisor paired with a quieter gold accent further back is a genuinely common combination rather than an unusual one. The only practical consideration mixing materials adds is aftercare: as covered in cleaning and hygiene around a tooth gem, the day-to-day routine barely changes between materials, but it is worth keeping in mind that a lower-abrasion toothpaste protects a rhinestone's surface shine a little more than it matters for a diamond or gold charm, so your gentlest habits are worth applying consistently across the whole set rather than only around whichever gem feels most precious.

Which material is right for you?

There is no single best material — it depends on your budget, the look you want, and how long you plan to keep it. A CZ or rhinestone is a sensible way to try the look without much outlay, and an easy one to replace if your taste changes. Swarovski steps up the sparkle for a moderate premium. Gold is the choice for something quiet and long-wearing in appearance rather than eye-catching. Diamonds are for a genuine, considered statement. Whatever you pick, the material should be applied with proper dental adhesive by a professional, and the gem itself should be flat-backed and smoothly finished so it bonds cleanly and does not irritate the lip or gum.

If you are unsure what suits your teeth — especially if you have existing dental work on the front teeth or a history of sensitivity to dental materials or metals — ask a dentist before you commit to a material, rather than choosing based on looks alone and hoping it works out. This guide is general information about materials and what drives their differences, not advice about your specific case.